comparison: src/basics.h
src/basics.h
- changeset 96
- 165777a20dc7
- parent 92
- c438a7db7c52
- child 148
- e1ced2523cad
equal
deleted
inserted
replaced
| 95:06a1aef170aa | 96:165777a20dc7 |
|---|---|
| 21 #include <cstdio> | 21 #include <cstdio> |
| 22 #include <cstdlib> | 22 #include <cstdlib> |
| 23 #include <cstring> | 23 #include <cstring> |
| 24 #include <cmath> | 24 #include <cmath> |
| 25 #include <optional> | 25 #include <optional> |
| 26 #include <type_traits> | |
| 26 #include <QMatrix4x4> | 27 #include <QMatrix4x4> |
| 27 #include <QObject> | 28 #include <QObject> |
| 28 #include <QPointF> | 29 #include <QPointF> |
| 29 #include <QSet> | 30 #include <QSet> |
| 30 #include <QString> | 31 #include <QString> |
| 160 inline glm::vec2 toVec2(const QPointF& point) | 161 inline glm::vec2 toVec2(const QPointF& point) |
| 161 { | 162 { |
| 162 return {point.x(), point.y()}; | 163 return {point.x(), point.y()}; |
| 163 } | 164 } |
| 164 | 165 |
| 165 constexpr float PIf = static_cast<float>(M_PI); | 166 /* |
| 166 constexpr double PI = M_PI; | 167 * coalesce(arg1, arg2, ..., argn) |
| 167 constexpr long double PIl = M_PIl; | 168 * Returns the first of the given arguments that evaluates to true. |
| 169 */ | |
| 170 template<typename T> | |
| 171 T coalesce(T&& arg) | |
| 172 { | |
| 173 // recursion base: 1 argument | |
| 174 return arg; | |
| 175 } | |
| 176 | |
| 177 template<typename T, typename... Rest> | |
| 178 std::common_type_t<T, Rest...> coalesce(T&& arg, Rest&&... rest) | |
| 179 { | |
| 180 // general case: n arguments | |
| 181 return arg ? arg : coalesce(rest...); | |
| 182 } | |
| 183 | |
| 184 template<typename T = double> | |
| 185 constexpr std::enable_if_t<std::is_floating_point_v<T>, T> PI = static_cast<T>(M_PIl); | |
| 168 | 186 |
| 169 Q_DECLARE_METATYPE(glm::vec3) | 187 Q_DECLARE_METATYPE(glm::vec3) |
| 170 Q_DECLARE_METATYPE(glm::mat4) | 188 Q_DECLARE_METATYPE(glm::mat4) |
